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<?php var_dump(unpack('n2', pack('n2', 1234, 1234)));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(2) { [1]=> int(1234) [2]=> int(1234) }